Patent · US Expired

Process for the manufacture of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one-2,2-dioxide

US3969348A · kind A · utility

3Cited by

2References

6Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Hartmut Pietsch · Bad Homburg vor der Höhe, DE
Karl Clauss · Hofheim, DE
Erwin Schmidt · Baltmannsweiler, DE
Harald Jensen

Key dates

Filing date	Jul 16, 1975
Grant date	Jul 13, 1976
Priority date	—
Expiry date	Jul 16, 1995

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D265/06
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

6-Methyl-3,4-dihydro-1,2,3-oxathiazin-4-one-2,2-dioxide or the nontoxic salts thereof is prepared by reacting 6-methyl-2,3-dihydro-1,3-oxazin-2,4-dione-3-sulfo-fluoride of the formula ##EQU1## with at least 1 mole water per mole of fluoride to obtain acetoacetamide-N-sulfo-fluoride with splitting off of CO.sub.2, treating the acetoacetamide-N-sulfofluoride with an aqueous and/or alcoholic base and isolating the oxathiazinone or the salts thereof.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.